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Commit 93ef666a authored by Jeremy Linton's avatar Jeremy Linton Committed by Catalin Marinas
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arm64: Macros to check/set/unset the contiguous bit 



Add the supporting macros to check if the contiguous bit
is set, set the bit, or clear it in a PTE entry.

Signed-off-by: default avatarJeremy Linton <jeremy.linton@arm.com>
Signed-off-by: default avatarCatalin Marinas <catalin.marinas@arm.com>
parent ecf35a23

arch/arm64/include/asm/pgtable.h

+11 −0
Original line number Diff line number Diff line
@@ -140,6 +140,7 @@ extern struct page *empty_zero_page; 
#define pte_special(pte)	(!!(pte_val(pte) & PTE_SPECIAL))

#define pte_write(pte)		(!!(pte_val(pte) & PTE_WRITE))

#define pte_exec(pte)		(!(pte_val(pte) & PTE_UXN))

#define pte_cont(pte)		(!!(pte_val(pte) & PTE_CONT))



#ifdef CONFIG_ARM64_HW_AFDBM

#define pte_hw_dirty(pte)	(pte_write(pte) && !(pte_val(pte) & PTE_RDONLY))
@@ -202,6 +203,16 @@ static inline pte_t pte_mkspecial(pte_t pte) 
	return set_pte_bit(pte, __pgprot(PTE_SPECIAL));

}



static inline pte_t pte_mkcont(pte_t pte)

{

	return set_pte_bit(pte, __pgprot(PTE_CONT));

}



static inline pte_t pte_mknoncont(pte_t pte)

{

	return clear_pte_bit(pte, __pgprot(PTE_CONT));

}



static inline void set_pte(pte_t *ptep, pte_t pte)

{

	*ptep = pte;